According to other comments on this thread all three of the names mentioned are already highly successful and financially independent individuals. I wonder if the high risk tolerance encourages them to focus more on the lifestyle aspects of this project (and if that is a trend we see in other startups founded by already successful individuals).
There is also something about well-off individuals taking investment money to get a fancy office rather then bootstrapping and keeping all the equity/destiny of the company themselves that smells funny to me. I guess its "free money" but I have to wonder if the products would be better if it was sweat equity instead.